A grandmother seemingly found an unlikely outlet to vent her anger about increasing gas prices when she went on a shooting spree in hit video game Grand Theft Auto V.

Gamergran87 was shown on YouTube getting her frustrations out by gunning down innocent bystanders in the game, while at the same time cursing British Gas for increasing its prices.

The video, which showed a split-screen of the game and the woman, came with the following warning: ‘Sorry about the language everyone but I got a letter from British Gas and I had to let my anger out!’

It is not yet certain if the path of destruction laid down by the pensioner was legitimate or whether it was all part of an elaborate viral marketing campaign, perhaps to promote the new Jackass film.

Whatever the explanation, there are still plenty of laughs to be had viewing the clip.